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Dr. Michael D. Baek, DO
NPI1932476975PAC ID0648556100
- Medicare services, 2022
- 540
- Part D claims, 2024
- 593
- Publications
- 1
- Hospital affiliations
- 2
- Industry payments
- $255
- Practice address
- 2300 Wankel Wy, Oxnard, CA 93030
- Practice phone
- Call (805) 485-1908
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Channel Islands Surgicenter
Surgery Center - Medicare-Certified · Oxnard, California
Find Dr. Baek's professional email, personal email and mobile number
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Dr. Michael D. Baek is a gastroenterologist in Oxnard, California
Dr. Baek practices at Channel Islands Surgicenter in Oxnard, California.
Dr. Baek's NPI, 1932476975, was assigned on November 18, 2011. Dr. Baek graduated from Arizona College of Osteopathic Medicine - Glendale in 2011. Dr. Baek holds California license 20A12528.
NPI and contact details
- NPI
- 1932476975NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648556100
- NPI enumeration date
- November 18, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 485-1908
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael D. Baek practices at Channel Islands Surgicenter in Oxnard, California
Dr. Baek's primary practice is Channel Islands Surgicenter, at 2300 Wankel Wy, Oxnard, CA 93030. The practice phone is (805) 485-1908.
- Channel Islands Surgicenter2300 Wankel Wy, Oxnard, CA 93030Phone(805) 485-1908
Source: Dmand AI Affiliation Data
Dr. Michael D. Baek is affiliated with 5 sites of care and 2 medical groups
Dr. Baek's primary practice is Channel Islands Surgicenter in Oxnard, California. Dr. Baek is also affiliated with Kaiser Permanente Woodland Hills Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Baek to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Channel Islands SurgicenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael D. Baek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Baek practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Channel Islands Surgicenter | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Michael D. Baek is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Baek's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Baek is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Baek is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. Baek treats.
Gastroenterologists near Dr. Baek
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
1,977gastroenterologists in California
7gastroenterologists in Oxnard
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael D. Baek billed Medicare for 540 services in 2022
CMS data shows 540 Medicare services from Dr. Baek across 12 procedure codes in 2022. Medicare paid $45,417 for them.
Medicare services, 2022540
Paid by Medicare$45,417
Procedure codes12
Dr. Baek's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Surgery
- 2021: 1892022: 24530%
- Office and hospital visits
- 2021: 2132022: 17816%
- Other services
- 2021: 942022: 11724%
Where Dr. Baek's Medicare services took place, 2022
- In an office16731%
- In a facility37369%
Dr. Baek compared with the California median for gastroenterologists, 2022
- Dr. Baek
- California median
- Medicare services
- 540vs 5868% below
- Part D claims
- 450vs 38018% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Baek's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Baek?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Baek and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael D. Baek's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Baek's median patient age at 60, with 52% women.
Dr. Baek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Michael D. Baek wrote 593 Medicare Part D claims in 2024
In 2024, Dr. Baek wrote 593 Medicare Part D claims for 208 patients. 95% of them were for generic drugs. CMS names the drug for 450 of them, across 12 drugs with 11 or more claims each, at $16,699 in total drug cost. In 2023, CMS named 278 claims across 9 drugs.
Part D claims, 2024593
Drugs named by CMS12
Total drug cost$16,699
Part D patients208
Dr. Baek's Part D claims by kind of drug, 2024
- Generic562 claims95%
- Brand-name31 claims5%
Dr. Baek's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Baek's Part D claims, 2024
- Antibiotics7%43 of 593 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2782024: 45062%
Drugs named by CMS: 12 in 2024, 9 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Michael D. Baek takes part in Medicare
Dr. Baek accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael D. Baek has 1 publication on record
Dmand AI links 1 paper to Dr. Baek in 2015. Dr. Baek's most frequent co-authors are Seper Dezfoli, MD, Parambir Singh Dulai, MBBS and Dermot P. McGovern, MD, PhD.
Papers1
Dr. Baek's most frequent co-authors
- Seper Dezfoli, MD1 shared paper
- Parambir Singh Dulai, MBBS1 shared paper
- Dermot P. McGovern, MD, PhD1 shared paper
Recent publications by Dr. Baek
See who Dr. Baek researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Baek works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael D. Baek received $255 in industry payments from 2016 to 2023
CMS Open Payments shows 12 general payments to Dr. Baek from 6 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 93% of the total. Boston Scientific Corporation paid the most, $135.
General payments to Dr. Baek by program year, 2016 to 2023
General payments to Dr. Baek by kind, 2016 to 2023
$255in total
- Food and beverage$23793%
- Education$177%
Companies that paid Dr. Baek the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael D. Baek graduated from Arizona College of Osteopathic Medicine - Glendale
Dr. Baek graduated from Arizona College of Osteopathic Medicine - Glendale in 2011. Dr. Baek is a member of AOA.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
- Board certified in 2012 - 2027
Source: Dmand AI Professional Profile Data
Dr. Michael D. Baek accepts plans from 5 insurance carriers
Dr. Baek is in network with 5 carriers, including Aetna, Kaiser Permanente and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Kaiser Permanente
- HCSC
- CMS Medicare
- Molina
Plan types Dr. Baek accepts, by number of carriers
- Medicare4
- EPO2
- HMO2
- POS2
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael D. Baek's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael D. Baek
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael D. Baek's NPI number?
Dr. Michael D. Baek's NPI number is 1932476975. It was assigned on November 18, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael D. Baek?
Dr. Michael D. Baek is a gastroenterologist in Oxnard, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Michael D. Baek practice?
Dr. Baek practices at 2300 Wankel Wy, Oxnard, CA 93030. Dr. Baek's primary practice is Channel Islands Surgicenter in Oxnard, California. Dmand AI also links Dr. Baek to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Michael D. Baek's office phone number?
The practice phone on file for Dr. Baek is (805) 485-1908.
What is Dr. Michael D. Baek's medical license number?
Dr. Baek holds California license 20A12528.
Which hospitals is Dr. Michael D. Baek affiliated with?
Dr. Baek is affiliated with Kaiser Permanente Woodland Hills Medical Center. Dmand AI links Dr. Baek to 1 more hospital.
What medical group is Dr. Michael D. Baek part of?
Dr. Baek is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Baek to 1 more medical group.
Does Dr. Michael D. Baek accept Medicare?
Yes. CMS data shows Dr. Baek billed Medicare for 540 services in 2022, and Dr. Baek accepts Medicare assignment.
Is Dr. Michael D. Baek board certified?
Yes. Dr. Baek is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Michael D. Baek bill to Medicare?
In 2022, Dr. Baek's most billed Medicare services were medicare service (G0500), office visit, established patient (99214) and surgery: digestive system (45380).
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Where did Dr. Michael D. Baek go to medical school?
Dr. Baek graduated from Arizona College of Osteopathic Medicine - Glendale in 2011.
What drugs does Dr. Michael D. Baek prescribe most?
In 2024 Medicare Part D data, Dr. Baek's most prescribed drugs by claims were Pantoprazole Sodium, Gavilyte-C and Diphenoxylate-Atropine.
Has Dr. Michael D. Baek received payments from drug or device companies?
CMS Open Payments shows $255 in general payments to Dr. Baek from 6 companies from 2016 to 2023. The largest total came from Boston Scientific Corporation.
How long has Dr. Michael D. Baek been practicing?
Dr. Baek graduated from medical school in 2011, 15 years ago.
Does Dr. Michael D. Baek do research?
Dmand AI links 1 publication to Dr. Baek.
Who does Dr. Michael D. Baek publish with?
Dr. Baek's most frequent co-authors are Seper Dezfoli, MD (1 shared paper), Parambir Singh Dulai, MBBS (1 shared paper) and Dermot P. McGovern, MD, PhD (1 shared paper).
What insurance does Dr. Michael D. Baek accept?
Dr. Baek is in network with 5 carriers, including Aetna, Kaiser Permanente and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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